Please add a version compatible with 2.1 experimental branch

Could be added as separate folder into the mod archive (if that's possible) or as a separate mod

All that's needed is to change "factorio_version" line from 2.0 to 2.1 in info.json file
I did it on my PC and tested and Calculator works without any issues

If you don't want to bother with it - I can just create a fork of you mod with this change, so other people can use it too, if you don't mind

P.S. Thank you for this mod, it was tiring alt+tabbing all the time just to do some calculations